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Post by puntkicker on Sept 2, 2016 16:01:56 GMT -5
Having read many old threads on here and having seen hysteria over "secret VCT use", I started to wonder if clinics could might possibly be able to tell you were in study due to whatever changes the loss of blood volume would cause?
While some things are replenished rather quickly, I read that for red blood cells, it takes soing like 4 weeks to replace a pint(which would seem to coincide with the 30 day washout period). I've seen many study requirements concerning the last time you had any blood taken from you, and I'm curious if anyone can offer any feedback on how blood loss from a study may or may not effect your next screening results. Thanks
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Post by antecubital on Sept 4, 2016 12:10:26 GMT -5
Having read many old threads on here and having seen hysteria over "secret VCT use", I started to wonder if clinics could might possibly be able to tell you were in study due to whatever changes the loss of blood volume would cause? While some things are replenished rather quickly, I read that for red blood cells, it takes soing like 4 weeks to replace a pint(which would seem to coincide with the 30 day washout period). I've seen many study requirements concerning the last time you had any blood taken from you, and I'm curious if anyone can offer any feedback on how blood loss from a study may or may not effect your next screening results. Thanks Yes, your will blood may be lower than normal after a study. If you screen for another study too soon after checking out of a previous one, your blood count may be low enough to get you excluded, but not banned. Low blood count by itself doesn't prove that you were in another study. There could be other reasons for it, like not maintaining a healthy diet. As for "secret VCT use", I don't think any clinic will do that. That's a major ethical violation to look you up in VCT or add your data to it without your informed consent. That's why there's always a separate consent form, just for VCT.
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FloridaGirl
Full Member
I am new to Phase 1 clinical trials so I am trying to learn as much as I can .
Posts: 160
Location: Florida
I mainly do: Healthy Studies
# of studies I have done: 3
A little about me: I am just getting started in clinical trials . Became unemployed and was doing small outpatient studies until someone told me about Covance and it has ed up a new world of making money.
So I am trying to do more inpatient studies and am hoping to do even more next year.
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Post by FloridaGirl on Sept 4, 2016 15:48:27 GMT -5
Having read many old threads on here and having seen hysteria over "secret VCT use", I started to wonder if clinics could might possibly be able to tell you were in study due to whatever changes the loss of blood volume would cause? While some things are replenished rather quickly, I read that for red blood cells, it takes soing like 4 weeks to replace a pint(which would seem to coincide with the 30 day washout period). I've seen many study requirements concerning the last time you had any blood taken from you, and I'm curious if anyone can offer any feedback on how blood loss from a study may or may not effect your next screening results. Thanks Well I know someone who screened for two studies and got into both. The second one started 5 days after we got out from the 1st study and that person went to the 2nd study with no problem so I do not know about the red cell issue. i know several people who study jump without a problem. I probably would get caught if I tried and I seem to bruise so that would be an issue for me. I was thinking that many people only let them draw blood from one arm during the study so maybe they are saving the other arm for the next study , as far as possible noticeable bruising. and u can screen for many studies and maybe not get in to all or any of them so the key would be to screen for several studies and then decide if you want to go from one to the next. And when u go to the second study you may still not get in or u may be an alternate so I guess most people leave their options . I myself am still learning so I just keep my eyes and ears .
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Post by vark on Sept 5, 2016 16:35:31 GMT -5
When they draw a lot of blood your iron levels can drop. So I met one guy who likes to take iron pills his first few days out of a study.
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FloridaGirl
Full Member
I am new to Phase 1 clinical trials so I am trying to learn as much as I can .
Posts: 160
Location: Florida
I mainly do: Healthy Studies
# of studies I have done: 3
A little about me: I am just getting started in clinical trials . Became unemployed and was doing small outpatient studies until someone told me about Covance and it has ed up a new world of making money.
So I am trying to do more inpatient studies and am hoping to do even more next year.
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Post by FloridaGirl on Sept 5, 2016 19:17:14 GMT -5
When they draw a lot of blood your iron levels can drop. So I met one guy who likes to take iron pills his first few days out of a study. Thanks, that is worth remembering. I don't t usually take iron at all because it makes me constipated but it is soing to think about. That is why, I guess, people say to eat red meat before checking in it must help your red blood cell count. i usually wait the 30 days but will remember taking iron if needed.
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Post by puntkicker on Sept 7, 2016 3:04:20 GMT -5
Thanks for the information, people. Vark's mention of iron seems like a great idea(especially since I normally avoid iron, being it's only lost through bleeding). It inspired me to do more research(though I didnt get too far with it yet), as I want to be proactive about the blood replenishment.
Think about it, even if you intend to wait 30 days between studies(or at least close to it), some places like Covance can screen about 20 days before the study. If one is screening pretty close to their last study, couldnt that make your screening results out of the ranges they want? I read about a lot of people failing multiple screenings, and feel like these are worthy questions to consider. Even though I suppose I'm potentially competing against most people who read my posts, I still feel decent when I try to offer them some things to consider.
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